16218383388 has 12 divisors (see below), whose sum is σ = 37842894600. Its totient is φ = 5406127792.

The previous prime is 16218383387. The next prime is 16218383411. The reversal of 16218383388 is 88338381261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 16218383388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16218383387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675765963 + ... + 675765986.

It is an arithmetic number, because the mean of its divisors is an integer number (3153574550).

Almost surely, 2^16218383388 is an apocalyptic number.

It is an amenable number.

16218383388 is an abundant number, since it is smaller than the sum of its proper divisors (21624511212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16218383388 is a wasteful number, since it uses less digits than its factorization.

16218383388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351531956 (or 1351531954 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The spelling of 16218383388 in words is "sixteen billion, two hundred eighteen million, three hundred eighty-three thousand, three hundred eighty-eight".